Aromatic or modified aromatic
Organic surface-active agents (other than soap); surface-active preparations, washing preparations (including auxiliary washing preparations) and cleaning preparations, whether or not containing soap, other than those of heading 3401: > Anionic organic surface-active agents, whether or not put up for retail sale: > Other: > Aromatic or modified aromatic
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 3402.39.10.00
Linear Alkylbenzene Sulfonic Acid (LABSA)
LABSA is a synthetic anionic surfactant with an aromatic structure, widely used as the primary active ingredient in liquid laundry detergents and dishwashing liquids. It qualifies under HTS 3402.39.10.00 as an aromatic organic surface-active agent due to its benzene ring backbone and sulfonic acid group, meeting the surface tension reduction test in Chapter 34 note 2. Typically supplied in bulk as a viscous brown liquid for industrial formulation.
Dodecylbenzene Sulfonic Acid (DDBSA)
DDBSA is a modified aromatic anionic surfactant used in heavy-duty industrial cleaners, emulsifiers, and agricultural formulations. Its aromatic benzene ring modified with a long alkyl chain and sulfonic group places it under HTS 3402.39.10.00 as it forms stable emulsions and reduces surface tension per Chapter note 2. Commonly imported in ISO-tanks for detergent manufacturing.
Sodium Xylene Sulfonate
This hydrotropic aromatic anionic surfactant enhances viscosity and solubility in liquid detergents and cleaning formulations. Classified under HTS 3402.39.10.00 for its modified xylene (dimethylbenzene) aromatic structure with sulfonate group, meeting organic surface-active agent criteria. Used as a coupling agent in retail and industrial cleaners.
Toluene Sulfonic Acid (TSA)
Para-toluene sulfonic acid serves as both a catalyst and anionic surfactant in polymerization and cleaning applications. Its aromatic toluene ring with sulfonic acid modification fits HTS 3402.39.10.00 as it demonstrates surface-active properties in aqueous solutions. Supplied as white flakes or 65% solution for chemical synthesis.
Cumenesulfonic Acid
An aromatic anionic surfactant derived from cumene (isopropylbenzene), used in polymerization emulsifiers and hydrotropic cleaners. Falls under HTS 3402.39.10.00 due to its modified aromatic structure and compliance with surface tension reduction standards. Imported as aqueous solution for specialty chemical applications.
Naphthalene Sulfonic Acid Salts
Sodium salts of naphthalene sulfonic acids act as anionic dispersants and surfactants in dye manufacturing and concrete admixtures. The fused aromatic ring system qualifies as modified aromatic under HTS 3402.39.10.00, forming stable emulsions per Chapter note. Typically powder form for industrial use.